Finds the previous entry in the list. Currently, this function will only work for the SentinelListLib.
address entries = new address[](2); entries[0] = address(4); entries[1] = address(5); address entry = address(5); address prev = findPrevious(entries, entry);
address[]
The array of entries.
address
The entry to find the previous entry for.
The previous entry in the list.